BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
Twinjack - Stream Spotify music with anyone with just a link
Deezer - Deezer is a music streaming app created in France. It is available in 180 counties and gets 16 million users a month. 6 million of the users have paid subscriptions. Read more about Deezer.
Quorus - A new way to listen to music through collaboration
üWave - üWave is a self-hosted collaborative listening platform.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm